数学是一门逻辑性强,抽象程度高,有严密系统性的科学,客观上要求按教学规律办事,即结合学生实际,遵循循序渐进和可接受性原则.然而同一班级学生知识和能力参差不齐,这就需要教师从学生实际出发,因材施教.要达到这一目的,“分层教学”是一种行之有效的教学方法.分层教学就是把学生按学习情况分成几个层次,对不同层次的学生提出不同的要求,采用不同的教学方法,使学生经过努力达到相应的要求. Mathematics is a logical, high-level abstraction, and has a strict systemic science. It objectively requires that students work in accordance with the teaching principles. That is, students should follow the principles of graduality and acceptability. However, students in the same class have different levels of knowledge and ability. This requires teachers to teach students in accordance with their aptitude. To achieve this goal, “stratified teaching” is an effective teaching method. Hierarchical teaching means that students are divided into several levels according to learning conditions. Different levels of students put forward different requirements and adopt different teaching methods so that students can work hard to achieve the corresponding requirements.